@article{oliveira_gonçalves_estrela_2022,  title={Extended stability study of an extemporaneously analgesic solution of clonidine, ropivacaine and fentanyl},  volume={58},  ISSN={1984-8250},  url={https://doi.org/10.1590/s2175-97902022e191121},  DOI={10.1590/s2175-97902022e191121},  journal={Brazilian Journal of Pharmaceutical Sciences},  publisher={Universidade de São Paulo, Faculdade de Ciências Farmacêuticas},  author={Oliveira, Alessandra Moreira de and Gonçalves, Jose Carlos Saraiva and Estrela, Rita de Cássia Elias},  year={2022},  pages={e191121} }